When his import/export business infiltrated by international diamond smugglers, Mr. Moto must follow a trail of clues littered with beautiful women, glittering gems and deadly assassins. Making his way from the mysterious streets of San Francisco's Chinatown to the dark and dangerous alleys of Shanghai, Mr. Moto will stop at nothing to bring the culprits to justice...even if it means making the ultimate sacrifice!

Davy Crockett and his sidekick Georgie compete against boastful Mike Fink ("King of the River") in a boat race to New Orleans. Later, Davy and Georgie, allied with Fink, battle a group of river pirates trying to pass themselves off as Native Americans.

Frank Johnson flees police after becoming an eyewitness to murder. He is pursued around scenic San Francisco by his wife, a reporter, the police, and... the real murderer.